Problem solving

Problem solving

***Note: the points In RED color are the ones you have to write about.
Part B
Electrical Engineering elements for this Project, as identified in the ITP, will mainly focus on the micro- hydro power needed for the rainwater multi-use system set-up. Therefore, the factors that you will be analysing in this section will be as follows (but not limited to):
•Identify the loads and energy usage of the loads associated with a micro-hydro engine required to run the spring water pump within the multi-use system which utilises the rainwater collection from multiple dwellings;
•Electrical requirements of the turn on/shut off valves.
Provide a simple process and instrumentation diagram of the multi-use electrical system. This should identify the source of power (micro-hydro), as well as the turn on/shut off valves that require electrical operation. Consideration should also be given to the monitoring system for the spring water pressure to ensure the environmental integrity of the spring water for future use.

Part C – Electrical Engineering Specifications
Electrical design specifications are required to show that your team’s solution will meet the project requirements. These include the following specifications:
•Conceptual calculations, drawings and justification to support the design of the power supply to the pump
•Circuits and diagrams that provide information about the circuit switch for the float valve and water pump connection with power supply
•Conceptual calculations and diagrams to determine power efficiency, power output and the pump capacity for translating water up steep terrain
–Electrical Engineering
The collected rain water can be utilised to generate electrical energy. One idea that is proposed is a micro hydro-power system. A micro hydro-power system can be built into the output water pipes. The pressure of the output water will turn a turbine built into the pipe. This can be classed as a generator can produce electricity because of Faraday’s law of electromagnetic induction. The law says that a change in the magnetic environment of a coil of wire will cause a voltage to be induced in the wire (Hyper Physics, n.d). This generator will be connected to the mains grid, feeding small amounts of electricity into the grid. Pokhara’s main electricity supply is produced in the large hydro-electric plant located at Phewa Lake, therefore the electricity is already environmentally friendly.
To power the local spring water pump which is used for small amounts of washing, there are several options available. Solar power is not a reliable source in Nepal as during the monsoon season it is mainly raining and there is very little sunlight. Wind power is also an unreliable source as the average wind is only 4km/h, therefore it cannot be certain there is sufficient amount of wind to power the pump at any given time.
Electrical shut off valves can also be put in place to regulate the flow of water and prevent damage to pipes when leaks occur.  The electrical shut off valve could be set up to block the water supply at the main outlet if a sensor detects water on the ground. An electrical shut off valve would prevent losing water in the event of a leak or pipe burst.
Monitoring systems could also been implemented on the water storage. By using a device such the AUS wireless monitoring system, measuring the water pressure at the outlet, the water levels in the storage tank can be determined. Due to the dangerous and complex nature of electricity, maintenance of these electrical components must be carried out by trained professionals. There will be professionals in the city of Pokhara who will have the skills required to perform maintenance and these professionals could be hired.

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